Dynamics and Depletion in Thermally Supercritical Starless Cores

2009/08/31 by Eric Keto, Paola Caselli · 1 citation
Physics and Astronomy · #astro-ph.GA

paper · pdf · doi:10.1111/j.1365-2966.2009.16033.x

accepted for publication in MNRAS

arxiv created 2009/11/18 · arxiv updated 2015/05/13

Abstract

In previous studies we identified two classes of starless cores, thermally subcritical and supercritical, distinguished by different dynamical behavior and internal structure. Here we study the evolution of the dynamically-unstable, thermally-supercritical cores by means of a numerical hydrodynamic simulation that includes radiative equilibrium and simple molecular chemistry. We use our non-LTE radiative transfer code MOLLIE to predict observable CO and N2H+ line spectra, including the non-LTE hyperfine ratios of N2H+, during the contraction. These are compared against observations of the starless core L1544.

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